Topochemical [2+2] Dimerization of Kinetically Stabilized 1-Phosphaallenes in the Solid State
作者:Shigekazu Ito、Satoshi Sekiguchi、Masaaki Yoshifuji
DOI:10.1002/ejoc.200300471
日期:2003.12
thermolysis of two bulky 1-phosphaallenes in the solid state afforded diphosphanylidenecyclobutane or 2,4-dimethylene-1,3-diphosphacyclobutane. The regioselectivity of the [2+2] dimerization depends largely on the crystal structure of the 1-phosphaallenes, and the reaction path seems to be affected by the presence of bulky 2,4,6-tri-tert-butylphenyl (Mes*) group. This topochemical reaction was also controlled
两种体积大的固态 1-磷丙二烯的热解得到二亚磷酰环丁烷或 2,4-二亚甲基-1,3-二磷杂环丁烷。[2+2] 二聚的区域选择性很大程度上取决于 1-磷丙二烯的晶体结构,反应路径似乎受到大体积 2,4,6-三叔丁基苯基 (Mes*) 的影响团体。这种拓扑化学反应也受 1-磷烯骨架 3 位取代基的控制。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2003)